how to save the generated images by GAN?

i need to generate images by GAN ,so i followed ' Train Generative Adversarial Network' example presented here

but i have a difficulty in saving the generated images as a separated images not a dlarray

can any one help?

[Ranpreet Kaur]

Hi,

Did you solve the question? how to save images generated by GAN.

[Nagwa megahed]

No, i still have the problem

please if you find a way or solution ,write it in a comment immediately

Answer 1

[Image Analyst]

Look where they display the images:

I = imtile(extractdata(dlXGeneratedNew));
I = rescale(I);
figure
image(I)
axis off
title("Generated Images")

So can't you just use extractdata() to get one image and then use imwrite() on that?

[Nagwa megahed]

thanxs for your answer but I can't understand what does you mean?

i need to save each generated image as a separated image

how can i use the generated images in training a deep network?

[Ranpreet Kaur]

I am stuck on same problem. How to save images generated by GAN?

[Image Analyst]

Can you get out one image, like such that you can pass it to imshow() to view it? If so, you can pass the same variable to imwrite().

[Image Analyst]

Look where they do

I = imtile(extractdata(dlXGeneratedValidation));
[rows, columns, numberOfColorChannels] = size(I);

to get that 5 by 5 montage of images. So simply get the size of one and extract using indexing. I'm not sure what the huge difficulty is.

% Get size of 1
row1 = rows/5;
col1 = columns/5;
for col = 1 : 5
    leftCol = (col-1) * col1 + 1;
    rightCol = leftCol + col1 - 1;
    for row = 1 : 5
        topRow = (row-1) * row1 + 1;
        bottomRow = topRow + row1 - 1;
        thisImage = I(topRow:bottomRow, leftCol:rightCol, :);
        imshow(thisImage);
        drawnow;
        fileName = sprintf('row %d, col%d.png', row, col);
        imwrite(thisImage, fileName);
    end
end

Adapt as needed, like the filename or whatever.

Here is a review of indexing:

https://www.mathworks.com/help/matlab/math/array-indexing.html?searchHighlight=indexing&s_tid=srchtitle

Here is the documentation on imwrite:

https://www.mathworks.com/help/matlab/ref/imwrite.html?searchHighlight=imwrite&s_tid=srchtitle

[Nagwa megahed]

Thanks alot, i did it with your help

[amel laidi]

can you tell us in details how you used this solution on individual images? thank you